magnetic field lines near a wire perpendicular to this page carry current out of page
a_ circles clockwise
b_ circle counter-clockwise
c_ radiate inward
d_ radiate outward
isn't it b) when you use the right hand rule
To determine the direction of the magnetic field lines near a wire carrying current, you can use the Right Hand Rule. Here's how you can use this rule to answer the question:
1. Extend your right hand with your thumb pointing in the direction of the current (out of the page).
2. Curl your fingers around the wire. The direction in which your fingers curl represents the direction of the magnetic field lines.
According to the right-hand rule, if you use your right hand as described above, your fingers will curl in a counter-clockwise direction. Therefore, the correct answer is (b) circle counter-clockwise.
It's important to note that this rule applies to a wire carrying current in a direction perpendicular to the plane of the page.